To Regex Pandoc Tables

Minimum Data to regex

\documentclass{article}
\begin{document}

-------------------------------------------------------------
A           B       C               D
Header      Aligned Aligned         Aligned
----------- ------- --------------- -------------------------
First       row     12.0            Example of a row that
                                    spans multiple lines.

Second      row     5.0             Here's another one. Note
                                    the blank line between
                                    rows.
-------------------------------------------------------------

Table: Here's the caption. It, too, may span
multiple lines.

\section{Lorem Ipsun}
Hello world!

-------------------------------------------------------------
A           B       C               D
Header      Aligned Aligned         Aligned
----------- ------- --------------- -------------------------
First       row     12.0            Example of a row that
                                    spans multiple lines.

Second      row     5.0             Here's another one. Note
                                    the blank line between
                                    rows.
-------------------------------------------------------------

Table: Here's the caption. It, too, may span
multiple lines.

\end{document}

Desired output

-------------------------------------------------------------
A           B       C               D
Header      Aligned Aligned         Aligned
----------- ------- --------------- -------------------------
First       row     12.0            Example of a row that
                                    spans multiple lines.

Second      row     5.0             Here's another one. Note
                                    the blank line between
                                    rows.
-------------------------------------------------------------

Table: Here's the caption. It, too, may span
multiple lines.

-------------------------------------------------------------
A           B       C               D
Header      Aligned Aligned         Aligned
----------- ------- --------------- -------------------------
First       row     12.0            Example of a row that
                                    spans multiple lines.

Second      row     5.0             Here's another one. Note
                                    the blank line between
                                    rows.
-------------------------------------------------------------

Table: Here's the caption. It, too, may span
multiple lines.

I want extract all tables from LaTeX document.

Pseudocode

1. match >7 of "-" in a row and until everything until "Table:". Include the line with "Table:" but not not anything after that line.
2. iterate 1) until the end of the file

My attempt

The first step

[-]{10,777}$

and to include now everything except word "Table:"

((?!Table:).)*$

and include finally everything from line with "Table:"

^(?=.*?\Table:\b)

All combined

[-]{10,777}$((?!Table:).)*$^(?=.*?\Table:\b)

which cannot work. There is something wrong but I do not know what.

How can you regex such an environment well in Perl?